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BabaBlast [244]
3 years ago
11

URGENT PLS HELP<3 Each person needs to rent a helmet for $5. Write the expression for the total cost for the helmets.

Mathematics
2 answers:
SpyIntel [72]3 years ago
4 0

Answer:

5n

Step-by-step explanation:

cost of one helmet = $5

let 'n' be the number of person that is n=1,2,3,4........

note that the value of n is always a natural number

therefore the expression = 5n

where 5 is the cost one helmet

n is the number of persons

Andreyy893 years ago
4 0
5n is the answer. N is the number. Hope this helps
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A club swimming pool is 21ft wide and 41ft long. The club members want a uniform width border around the pool. They have enough
oksano4ka [1.4K]

<u>Answer-</u>

<em>Strip with </em><em>2.13 ft </em><em>width can be used. </em>

<u>Solution-</u>

A club swimming pool is 21 ft wide and 41 ft long.

Hence, the perimeter of the swimming pool is

P=2(\text{Length}+\text{Width})=2(41+21)=2(62)=124\ ft

The club members want a uniform width border around the pool.

They have enough material for 264 ft²

As they will cover the perimeter of the rectangular pool, so the length of the total used strip is equal to the perimeter of the swimming pool.

Let the width of the strip is x ft

So, the total area of the used strip is,

A=\text{Length}\times \text{Width}

Putting the values,

\Rightarrow 264=124\times x

\Rightarrow x=\dfrac{264}{124}

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4 0
3 years ago
What is the equation of the line that has a slope of m = 2 and passes through the point (-5, -6)?
Alenkinab [10]

Answer:

y=2x+4

Step-by-step explanation:

You can solve this two ways: insert the values into point-slope form and simplify to solve for y, converting it to slope-intercept form, <em>or</em><em> </em>insert the values into slope-intercept form, solve for b, and insert b. We'll do both :)

<em><u>Point-slope form:</u></em>

y-y_{1}=m(x-x_{1})

Where:

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  • x_{1} and y_{1} are corresponding coordinate points (x,y)

Insert the given values:

m=2\\\\(-5_{x_{1}},-6_{y_{1}})\\\\y-(-6)=2(x-(-5))\\\\y+6=2(x+5)

Solve for y. Expand the right sie using the distributive property:

y+6=2(x)+2(5)\\\\y+6=2x+10

Isolate the variable. Subtract 6 from both sides, canceling out the 6 on the left:

y+6-6=2x+10-6\\\\y=2x+4

<em>OR</em>

<em></em>

<em><u>Slope-intercept form:</u></em>

y=mx+b

Where:

  • m is the slope
  • b is the y-intercept
  • x and y are corresponding coordinate points (x,y)

Insert the given values:

m=2\\\\(-5_{x},-6_{y})\\\\-6=2(-5)+b

Simplify the multiplication:

-6=-10+b

Solve for b. Add 10 to both sides, canceling out the 10 on the right:

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The value of b is 4. Insert the appropriate information into the equation. When using slope-intercept form, you don't plug in the coordinate points:

y=2x+4

:Done

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LCM of 8,9,12 is 72

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